/**
 *    Copyright ${license.git.copyrightYears} the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.mybatis.generator.codegen.mybatis3.javamapper.elements.annotated;

import static org.mybatis.generator.api.dom.OutputUtilities.javaIndent;
import static org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities.getEscapedColumnName;
import static org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities.getParameterClause;
import static org.mybatis.generator.internal.util.StringUtility.escapeStringForJava;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.dom.java.FullyQualifiedJavaType;
import org.mybatis.generator.api.dom.java.Interface;
import org.mybatis.generator.api.dom.java.Method;
import org.mybatis.generator.codegen.mybatis3.ListUtilities;
import org.mybatis.generator.codegen.mybatis3.javamapper.elements.InsertMethodGenerator;
import org.mybatis.generator.config.GeneratedKey;

/**
 * 
 * @author Jeff Butler
 */
public class AnnotatedInsertMethodGenerator extends InsertMethodGenerator {

  public AnnotatedInsertMethodGenerator(boolean isSimple) {
    super(isSimple);
  }

  @Override
  public void addMapperAnnotations(Interface interfaze, Method method) {
    interfaze.addImportedType(new FullyQualifiedJavaType("org.apache.ibatis.annotations.Insert")); //$NON-NLS-1$

    GeneratedKey gk = introspectedTable.getGeneratedKey();

    method.addAnnotation("@Insert({"); //$NON-NLS-1$
    StringBuilder insertClause = new StringBuilder();
    StringBuilder valuesClause = new StringBuilder();

    javaIndent(insertClause, 1);
    javaIndent(valuesClause, 1);

    insertClause.append("\"insert into "); //$NON-NLS-1$
    insertClause.append(escapeStringForJava(introspectedTable.getFullyQualifiedTableNameAtRuntime()));
    insertClause.append(" ("); //$NON-NLS-1$

    valuesClause.append("\"values ("); //$NON-NLS-1$

    List<String> valuesClauses = new ArrayList<String>();
    Iterator<IntrospectedColumn> iter = ListUtilities.removeIdentityAndGeneratedAlwaysColumns(
        introspectedTable.getAllColumns()).iterator();
    boolean hasFields = false;
    while (iter.hasNext()) {
      IntrospectedColumn introspectedColumn = iter.next();

      insertClause.append(escapeStringForJava(getEscapedColumnName(introspectedColumn)));
      valuesClause.append(getParameterClause(introspectedColumn));
      hasFields = true;
      if (iter.hasNext()) {
        insertClause.append(", "); //$NON-NLS-1$
        valuesClause.append(", "); //$NON-NLS-1$
      }

      if (valuesClause.length() > 60) {
        if (!iter.hasNext()) {
          insertClause.append(')');
          valuesClause.append(')');
        }
        insertClause.append("\","); //$NON-NLS-1$
        valuesClause.append('\"');
        if (iter.hasNext()) {
          valuesClause.append(',');
        }

        method.addAnnotation(insertClause.toString());
        insertClause.setLength(0);
        javaIndent(insertClause, 1);
        insertClause.append('\"');

        valuesClauses.add(valuesClause.toString());
        valuesClause.setLength(0);
        javaIndent(valuesClause, 1);
        valuesClause.append('\"');
        hasFields = false;
      }
    }

    if (hasFields) {
      insertClause.append(")\","); //$NON-NLS-1$
      method.addAnnotation(insertClause.toString());

      valuesClause.append(")\""); //$NON-NLS-1$
      valuesClauses.add(valuesClause.toString());
    }

    for (String clause : valuesClauses) {
      method.addAnnotation(clause);
    }

    method.addAnnotation("})"); //$NON-NLS-1$

    if (gk != null) {
      addGeneratedKeyAnnotation(interfaze, method, gk);
    }
  }
}
